Stahl, Saul. <br/><br/>
The Poincaré half-plane  a gateway to modern geometry /  [electronic resource] : 
Saul Stahl. 
 - Boston :  Jones and Bartlett Publishers,  c1993. 
 - 1 online resource. 
 - Jones and Bartlett books in mathematics .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780867202984 9780585288284 (electronic bk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Non-Euclidean.
<br/><br/><label>LC Class. No.: </label>QA685  / .S79 1993